1930'S DIAMOND AND RUBY SIGNET RING Set with a cushion diamond framed by tiers of calibrated rubies and small diamonds. Set in platinum. French work. It is engraved with two dates 1922-1937. Gross weight: 10.44 g. Finger size : 45. Diamond weight: approx. 1.20 carats. Provenance : Jewel case of a great French aristocratic family, this ring was most probably offered on the occasion of the fifteenth wedding anniversary of the ancestress of the current owners. A diamond, ruby and platinum ring, circa 1930. French assay mark. Engraved with two dates : 1922-1937. Gross weight : 10,44 gr. Finger size : 45. Diamond weight : 1,20 carat approx.